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Which type of lens should a person who is near sighted use explain?
Wiki User
∙ 12y ago
If you are near sighted u can see close but not at distances so you would have to use a negative lense in glasses or contacts such as -1.25
Wiki User
∙ 12y ago
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How does a convex lens fix eye problems?
A convex or converging lens can fix eyes with long sighted vision. A person who is long sighted cannot focus on near objects which can be corrected by wearing a convex lens.ÊÊ
When a person is far sided do the need a concave lens or convex lens?
Farsighted people use convex lenses to correct their vision.(This is the correct answer!)
How do glasses help short sighted people?
Short sighted people are not helped by lenses or anything else. Except the consequences of their short sightedness. I think you mean near sighted people. The eye is a lens and focal point system. The focal length of the eye can be manipulated by flexing muscles in the eye socket to change the distance between the lens and the back of the eyeball. A near sighted, or even a far sighted, person has an eyeball that is too long or too short for the lens, and therefore the image produced by the eye's lens is focused either in front of or behind the back of the eye. A lens, either in a pair of glasses or a contact lens, can assist the eye by effectively pre-focusing the image that enters the lens of the eye to a sharpness that can be accommodated by the focal length of the malformed eyeball, focusing the image sharply on the back of the eyeball. - wjs1632 -
What uses concave lens?
Glasses for short sighted people.
Why are convex lens useful?
convex lenses are for short sighted people.
Why use convex lens?
convex lenses are for short sighted people.
If lens can't change its shape to focus light what would happen?
TThe person would only be able to see in certain kind of lights since the pupils changes shapes to see better in different lights.
Type of image of convex lens?
a convex lens looks like an oval from the side. it can be used in the glasses of a long sighted person. i really should be doing my homework right now. i have been doing it since 11am and it is now 15.43pm.
How do you use concave lens in a sentence?
A concave lens is thinner at the centre. People who are short sighted often use a concave lens to help them see better.
What does a negative 5 mean in eyesight?
The person is moderately myopic (short sighted or near sighted). The person can see things that are closer clearly but things that are far will be out of focus. The eye is bulged and the image forms in front of the retina and a concave lens with -5 power will help in forming a clearer image on the retina.
What is the property of image formed by concave lens?
Image formed by a concave lens or a diverging lens is virtual,upright and smaller than the object.It is used by short sighted people.
Does the least distance of distinct vision increase or decrease for long sighted eye?
A long-sighted eye has a lens of insufficient power so that it needs an extra convex (magnifying) lens to bring objects into focus. A more powerful lens allows objects to be focussed at a closer distance, and that is what a magnifying glass does.
